linux-kernel - Re: [PATCH] staging: lustre: lustre: libcfs: pr

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Date:	Fri, 15 Aug 2014 16:21:48 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Hema Prathaban <hemaklnce@...il.com>
Cc:	devel@...verdev.osuosl.org, oleg.drokin@...el.com,
	andreas.dilger@...el.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: lustre: lustre: libcfs: pr_warn instead printk

On Fri, Aug 15, 2014 at 11:48:05PM +0530, Hema Prathaban wrote:
> This patch fixes the following warning using checkpatch.pl
> WARNING: Prefer [subsystem eg: netdev]_warn([subsystem]dev, ... then
> dev_warn(dev, ... then pr_warn(...  to printk(KERN_WARNING ...
> 
> Signed-off-by: Hema Prathaban <hemaklnce@...il.com>
> ---
>  drivers/staging/lustre/lustre/libcfs/debug.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/staging/lustre/lustre/libcfs/debug.c b/drivers/staging/lustre/lustre/libcfs/debug.c
> index 6b58469..8143ebe 100644
> --- a/drivers/staging/lustre/lustre/libcfs/debug.c
> +++ b/drivers/staging/lustre/lustre/libcfs/debug.c
> @@ -344,7 +344,7 @@ void libcfs_debug_dumplog_internal(void *arg)
>  		snprintf(debug_file_name, sizeof(debug_file_name) - 1,
>  			 "%s.%ld.%ld", libcfs_debug_file_path_arr,
>  			 get_seconds(), (long_ptr_t)arg);
> -		printk(KERN_ALERT "LustreError: dumping log to %s\n",
> +		pr_alert(KERN_ALERT "LustreError: dumping log to %s\n",
>  		       debug_file_name);
>  		cfs_tracefile_dump_all_pages(debug_file_name);
>  		libcfs_run_debug_log_upcall(debug_file_name);
> @@ -376,7 +376,7 @@ void libcfs_debug_dumplog(void)
>  			     (void *)(long)current_pid(),
>  			     "libcfs_debug_dumper");
>  	if (IS_ERR(dumper))
> -		printk(KERN_ERR "LustreError: cannot start log dump thread:"
> +		pr_err(KERN_ERR "LustreError: cannot start log dump thread:"

You need to take the printk prefix off of these types of lines if you
are using the pr_*() macro, otherwise you will get a mess in the system
log.

thanks,

greg k-h
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